Here is the full list of all 11 Zombie Party achievements.
Play Zombie Party for Twelve hours! Go Home!!!
Die 15 times!
Play Zombie Party for six hours! Keep going!!!
Eat 69 Cheeseburgers!
Have 25,000 gold in your player account!
Have 10,000 gold in your player account!
Shoot 10,000 Bullets!
Um... yeah.
Play Zombie Party for one hour!
Hop around until something happens!
Gotta blow 'em up!